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Efficient Input Methods in IT Solutions

Explore various input devices such as keyboards, mice, scanners, and cameras for data input in IT solutions. Learn about touchpads, OCR, OMR, MICR, barcode readers, and speech recognition, considering factors like speed, cost, and ease of use.

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Efficient Input Methods in IT Solutions

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  1. Selection & Use of Input devices and media AQA INFO 1 Section 4 tcowling 2009 from Mott, Leaming & Williams

  2. Input Devices • When devising an IT solution to a problem, you need to consider how the users will input data to the computer. • Key board • Mouse tcowling 2009 from Mott, Leaming & Williams

  3. Scanners • Scanners can be used to input an image • Pictures stored in different formats • .bmp & .jpeg etc • Useful for printed hard copies • Depends on clarity of original handwriting or paper tcowling 2009 from Mott, Leaming & Williams

  4. Digital Cameras • Connects via a USB port or memory card • Images can be downloaded and stored • Useful for modifying images [red eye] • Need accompanying software as well tcowling 2009 from Mott, Leaming & Williams

  5. Touchpads • Rectangular pad on laptop • Touch sensitive by use of the finger • Acts as a mouse • Don’t need to carry an additional mouse • Not often as easy to use as a mouse tcowling 2009 from Mott, Leaming & Williams

  6. Optical Character Recognition [OCR] • Device recognises characters by light sensing methods • EG Post Office address reader system or car number plate readers on speed cameras • Easy to store information quickly • Close match is not always the correct match tcowling 2009 from Mott, Leaming & Williams

  7. Optical Mark Recognition [OMR] • Mark sensing on pre-printed documents • Contain boxes which indicate choices marked using carbon • Avoids human keyboard entry • Forms need to be un-creased to work properly tcowling 2009 from Mott, Leaming & Williams

  8. Magnetic Ink Character Recognition[MICR] • Pre-printed with character data in special ink that is magnetised. • Almost used exclusively to read cheques • Minimises fraud • Needs expensive equipment tcowling 2009 from Mott, Leaming & Williams

  9. Bar Code Readers • Means of identifying items with a unique product code • Read using light and encoded into a readable format • Read quickly with few mistakes • Expensive equipment needed tcowling 2009 from Mott, Leaming & Williams

  10. Speech Recognition • Enable large quantities of data to be input as words verbally • Useful when using hands is not an option [factory/user etc] • User must speak clearly with little variation in dialect tcowling 2009 from Mott, Leaming & Williams

  11. Which input device to use & when tcowling 2009 from Mott, Leaming & Williams

  12. Summary • Automatic input methods remove need to key in data • Large quantities of data to be read/input quickly • Range of different methods • Keyboard • OCR • OMR • MICR • Bar code scanning • Speech Recognition • Number of factors considered when choosing an input method • Volume of data • Cost • Speed • Ease of Use tcowling 2009 from Mott, Leaming & Williams

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